Safety Razors
https://cdn.shopify.com/s/files/1/1701/0743/products/Feather_All_Stainless_Steel_Double_Edge_Safety_Razor_AS-D2_4_2000x.jpg

Boys who buy overpriced 12-blade replacement heads or get a new electric trimmer every year because they're scared of nicks and cuts will eventually find that this thing gets the closest shave you can imagine and replacement blades cost less than 5¢ ea

Don't cheap out on the handle tho, get a German-made safety razor. Cheap, poorly made safety razors is what gives them a bad rep for cutting faces.